These are a younger and older Parasol fungus. The younger has a narrower cap. The older one's cap splays out like a opened parasol. I believe they have black spores.
Macrolepiota is a genus of white spored gilled mushrooms of the family Agaricaceae. The best known member is the parasol mushroom (M. procera). The genus has a widespread distribution and contains about 30 species.
